breastroker

My brand new Mercedes Benz C Class rear end arrived barely a week after ordering it (8 days exactly) from Potomac German Auto. Part number A 203 351 00 08 makes it for a W 203 C Class, supposedly for the anemic C 240?

attached photo of entire assembly. Only was $40 shipping cross country.

breastroker

Here is a photo of the part number:

breastroker

And here is the photo of the Magic 3.67

I assume we all have the ratio stamped in the same spot, should be easy to read from the rear, on a lift.

breastroker

Actually I was hoping for the Laurel wood I ordered last Monday so I can get the aluminum out by Labor Day. Maybe in the next couple of days


This is the prefect rear end for the M281 engined 2003-04 1.8 liter Coupes and Sports Sedans. I undersatnd the 2004 may have a 3.47 rear end ( someone check) which would be a 7% increase in torque for $590

My 2003 with it's 3.27 rear end will get a 12% increase in torque

Last photo:

webhost

Now that is what I call a mod.

12% increase in applied torque.

awsome mod, one of the first things I did in a 69 Beaumont (Canadian Chevelle) a few years ago, turned out to be a awsome increase in "set you back in your seat" feel.

How much was it for the center section?

will you have a before and after 0-60 ect?

Let us know what you think after the install.

cheers

mctwin2kman

According to MBUSA the 2004 has the 3.47 rear. The funny thing is that the 0-60 time is thesame as the 2003. I had heard that the 2003 has a 3.47 rear as well, but I can not find any info on it. Check your 2003 and see what rear it has when you pull it out.

breastroker

I suggest we start a rear end swapping area. A lot of the C240 sedans are purchased with 3.47s and 3.67s and get horrible gas mileage. Sinch those of us with 3.27s want those higher ratio rear ends, a swap with just shipping would benefit all.

webhost

hey dork(stroker)

are you going to answer my Q

how much was the diff

MARK CUMMINS

REREAD The Thread.... Its There!

lars

I hadn't realised the rear end ratio is stamped on the outside of the casing m But my 03 1.8L is stamped 3.46, not 3.47.

breastroker

Lars, then it must be 3.46. Actually it probably is 3.45567 then some people round up to 3.47 and some round down to 3.46.

But of MB puts 3.46 then lets use that number.

Lars, is your car 6 speed stick or 5 speed auto?

lars

6-spd manual.

rrf

Now this is an interesting thread.
Best of luck, please keep us posted on the final outcome.

Any worries about the auto transmission needing ECU changes to match the new rear ratio?

breastroker

The information I had was the Coupe with stick had the 3.46 and the coupes with auto used the 3.27.

I don't have good information on the C230 sedans, the C320s all used 3.27s and the mighty c240 used 3.46s and 3.67s.

mctwin2kman

My 2003 C230 6 Speed has a 3.47. No all we need is someone with a 2003 C230 5 speed built after January to check theres. Since the 2004's all have the 3.47 for the auto or stick in a C230 Coupe or Sedan.

TNblkc230wz

I need to check my C320C. Can you see the number without jacking if up?

Can someone with an 03 6sp tell me their max speed in 1st gear. Mine is 31 MPH.

Lenny

and its 3.27. Its very easy to see, you dont even have to jack the car up.

TNblkc230wz

My C320 6sp has a 3.27 also.

rrf

This is a couple of hour job, and it has been several days, is it done yet? Results?

breastroker

There are quite a few things to do before installing the 3.67 rear end.

First need a dyno of the stock set up.

Second the EGS and the speedometer has to be reprogrammed for the new ratio rear end.

Third, time to do the actual install, which is the easiest part, about two hours.

I have two conventions to go to in the next two weeks, so towards the end of September it may be installed

rrf

Yes from what I understand getting the the EGS set correctly will be the tough part (non DIY).

Who will do the EGS for you? and what cost for the EGS reprogram?

breastroker

rrf,

There may be three choices, no price quoted yet.


Bergwerks which is near me.
http://www.bergwerks.com/different.jsp


Kleeman http://www.kleemannusa.com

and Donnie Drummonds (Benzmac) owner of www.mbautowerks.com


Richard Jaques at Potomac German Parts has two more C240 rear ends, 3.67!!!
I confirmed they are from C240's.
He has no 3.47s in stock, a whole pile of 3.27s and 3.06s.

Buellwinkle

First, I don't understand, why a dyno. Rear gear ratios do not change the amount of power, afterall you are measuring power at a certain RPM, the ratio that you hit that RPM isn't going to make that much of a different and it can go either way.

Second, from what I understand, the VSS is on the front wheel so why would you need calibration?

Third - Just do it!

breastroker

Buellwinkle,
Donnie from says mbautowerks " He seems to really know what he is talking about. There are no problems with the 6 speed stick, just with the auto. Check out his web site, they have done some awesome cars
PARTNER IN MERCEDESSHOP.COM
OWNER OF www.mbautowerks.com

moondragon

Anyone with VIN numbers of C240 autos with the 3.67 rear-ends ?
I need this to source the part number of the EGS box.

Thanks for your help.